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151.
152.
Multi-criteria location planning for public facilities in tsunami-prone coastal areas 总被引:3,自引:0,他引:3
We present a model for multi-objective decision analysis with respect to the location of public facilities as schools in areas
near to coasts, taking risks of inundation by tsunamis into account. A mathematical programming formulation with three objective
functions is given. The first objective function is a weighted mean of a minisum and a maximum coverage criterion. The second
objective function expresses risk by possible tsunami events; for quantifying this risk, a statistical model for tsunami occurrences
by Kaistrenko and Pinegina is applied. The third criterion represents costs. For the solution of the multi-objective optimization
problem, we propose a heuristic approach based on the NSGA-II algorithm and compare it with a decomposition technique where
the region under consideration is partitioned into smaller sub-regions, and the problem is solved for each separate subregion
either exactly or heuristically. Both approaches are tested on two real-life instances from southern Sri Lanka. 相似文献
153.
154.
身为一个大家心目中的网络和系统高手,我经常收到诸如此类的求助信息,要求帮助他们解决网络故障。可很多时候通过电话,不但问题描述不清楚,就是听明白了,对方也不一定能听懂我的解决方法,最后只有上门去服务,真是令人头疼! 相似文献
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156.
Guenther Fuellerer Karl F. Doerner Richard F. Hartl Manuel Iori 《Computers & Operations Research》2009
In this paper a combination of the two most important problems in distribution logistics is considered, known as the two-dimensional loading vehicle routing problem. This problem combines the loading of the freight into the vehicles, and the successive routing of the vehicles along the road network, with the aim of satisfying the demands of the customers. 相似文献
157.
Large Eddy Simulation (LES) is used to model two lake sidearms subject to heating from solar radiation and cooling from a surface flux. The sidearms are part of Lake Audrey, NJ, USA and Lake Alexandrina, SA, Australia. The simulation domains are created using bathymetry data and the boundary is modelled with an Immersed Boundary Method. We investigate the cooling and heating phases with separate quasi-steady state simulations. 相似文献
158.
Jaeyoung LimJames Q. Zheng Karl MastersWeinong W. Chen 《International Journal of Impact Engineering》2011,38(4):219-227
Axial tension and transverse compression experiments on single fibers were performed to investigate the mechanical behavior of three high-performance fibers (Kevlar®, Kevlar® 129, and Twaron®) with diameters in the order of 9-12 μm. The single fibers were manufactured from 1998 through 2008. A miniaturized tensile Kolsky bar was used to determine the tensile response of PPTA single fibers at a high strain rate. Gage length and strain rate were found to have minimum effects on the tensile strength of PPTA single fibers. Manufacturing time over a decade was found to have negligible effects on the tensile strength of the fibers. Initial transverse compression on the fibers reduces their ultimate tensile strengths. A high resolution scanning electron microscope (SEM) was also used to examine the fracture modes of transversely deformed fibers. Different types of fracture morphology were observed. 相似文献
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160.
Joachim Mittendorf Prof. Dr. Stefan Weigand Dr. Cristina Alonso‐Alija Dr. Erwin Bischoff Dr. Achim Feurer Dr. Michael Gerisch Dr. Armin Kern Dr. Andreas Knorr Dr. Dieter Lang Dr. Klaus Muenter Dr. Martin Radtke Dr. Hartmut Schirok Dr. Karl‐Heinz Schlemmer Dr. Elke Stahl Dr. Alexander Straub Dr. Frank Wunder Dr. Johannes‐Peter Stasch Dr. 《ChemMedChem》2009,4(5):693-693